Four Coventry men arrested by police investigating the murder of a father of two have been released on bail.

The group, aged 18, 19 and two aged 20, were arrested in the city on Wednesday morning on suspicion of assisting an offender in connection with the death of 35-year-old Jon Casey.

Mr Casey, 35, was found seriously injured in Barrack Road, Northampton, at about 5.30pm on January 16.

He died in Northampton General Hospital a short time later.

A 19-year-old man remains on bail after he was arrested on suspicion of murder on January 22.

Det Insp Mark Brayfield said: “We believe Mr Casey had been involved in an altercation with two men shortly before he was found in Barrack Road and I would still like to speak to anyone who may have been in the area at the time to contact us.

“We would particularly like to speak to a woman who was pushing a buggy in Hester Street at about 5.15pm, who we believe may have had a brief conversation with the offenders.

“She may not realise the significance of this encounter, and so I would urge her to please contact us.”

Witnesses, including the woman with the pushchair, or anyone with information about this incident, is asked to contact police on 101 or Crimestoppers anonymously on 0800 555 111.